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Runway incursion results in near midair collision between corp jet and small aircraft trainer. Pilot deviation.
| Attributes | |
| ACN | 180725 |
| Time | |
| Date | 199106 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : hpn |
| State Reference | NY |
| Altitude | agl bound lower : 0 agl bound upper : 30 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : hpn |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | ground other : taxi |
| Aircraft 2 | |
| Operator | general aviation : instructional |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Flight Phase | climbout : takeoff landing other other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Qualification | controller : non radar |
| Experience | controller military : 3 controller non radar : 4 |
| ASRS Report | 180725 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : ground |
| Qualification | controller : non radar |
| Experience | controller non radar : 1 |
| ASRS Report | 180550 |
| Events | |
| Anomaly | conflict : ground critical conflict : nmac incursion : runway non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : insufficient time none taken : unable |
| Consequence | faa : investigated faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 0 vertical : 30 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I was working the local control position at westchester county airport. I had small aircraft Y and small aircraft Z in right close traffic to runway 29 making touch and goes and numerous arrival/departure on runway 16. I cleared small aircraft Y for a touch and go runway 29. About 2 mins later I cleared the second small aircraft Z for a touch and go runway 29. As small aircraft Y started to lift off corp jet X crossed runway 29 at taxiway tango right in front of him. The pilot of small aircraft Y then stated 'that wasn't so good'. About 1 min later the pilot of small aircraft Y asked me if we had crossed that corp jet in front of him. I replied no. He then stated 'that was just a little too close'. After reviewing the tape we discovered in fact ground control had instructed corp X to hold short of runway 11 on taxiway tango. My best estimate and that of the pilot of small aircraft Y is that he passed about 30 ft over the top of aircraft X. The pilot of Y also later explained to me that the student only had 1/2 power on the plane so that even complicated it more. Supplemental information from acn 180550: corp jet X called westchester ground for taxi. I instructed X 'runway 16 hold short of runway 11 on taxiway tango'. X acknowledged his instruction with a readback of short of 11 on tango to 16 (identify). I then continued working ground control and approximately 2 mins later I observed corp jet X in the process of crossing the runway he was instructed to hold short of. At the same time I observed an aircraft departing runway 29 on a touch and go. To my best estimate I would say the small aircraft Y departing runway 29 passed about 30 ft over the top of corp X.
Original NASA ASRS Text
Title: RWY INCURSION RESULTS IN NMAC BTWN CORP JET AND SMA TRAINER. PLTDEV.
Narrative: I WAS WORKING THE LCL CTL POS AT WESTCHESTER COUNTY ARPT. I HAD SMA Y AND SMA Z IN R CLOSE TFC TO RWY 29 MAKING TOUCH AND GOES AND NUMEROUS ARR/DEP ON RWY 16. I CLRED SMA Y FOR A TOUCH AND GO RWY 29. ABOUT 2 MINS LATER I CLRED THE SECOND SMA Z FOR A TOUCH AND GO RWY 29. AS SMA Y STARTED TO LIFT OFF CORP JET X CROSSED RWY 29 AT TAXIWAY TANGO RIGHT IN FRONT OF HIM. THE PLT OF SMA Y THEN STATED 'THAT WASN'T SO GOOD'. ABOUT 1 MIN LATER THE PLT OF SMA Y ASKED ME IF WE HAD CROSSED THAT CORP JET IN FRONT OF HIM. I REPLIED NO. HE THEN STATED 'THAT WAS JUST A LITTLE TOO CLOSE'. AFTER REVIEWING THE TAPE WE DISCOVERED IN FACT GND CTL HAD INSTRUCTED CORP X TO HOLD SHORT OF RWY 11 ON TAXIWAY TANGO. MY BEST ESTIMATE AND THAT OF THE PLT OF SMA Y IS THAT HE PASSED ABOUT 30 FT OVER THE TOP OF ACFT X. THE PLT OF Y ALSO LATER EXPLAINED TO ME THAT THE STUDENT ONLY HAD 1/2 PWR ON THE PLANE SO THAT EVEN COMPLICATED IT MORE. SUPPLEMENTAL INFO FROM ACN 180550: CORP JET X CALLED WESTCHESTER GND FOR TAXI. I INSTRUCTED X 'RWY 16 HOLD SHORT OF RWY 11 ON TAXIWAY TANGO'. X ACKNOWLEDGED HIS INSTRUCTION WITH A READBACK OF SHORT OF 11 ON TANGO TO 16 (IDENT). I THEN CONTINUED WORKING GND CTL AND APPROX 2 MINS LATER I OBSERVED CORP JET X IN THE PROCESS OF XING THE RWY HE WAS INSTRUCTED TO HOLD SHORT OF. AT THE SAME TIME I OBSERVED AN ACFT DEPARTING RWY 29 ON A TOUCH AND GO. TO MY BEST ESTIMATE I WOULD SAY THE SMA Y DEPARTING RWY 29 PASSED ABOUT 30 FT OVER THE TOP OF CORP X.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.